Lottridge, Celia. Prairie dogs / Celia B. Lottridge and Susan Horner. - Toronto : Grolier, 1985. - 47 p. : ill., map. - Nature's children . ISBN: 0717219399 : $11.95 LCCN: cn 85098730 Subjects--Topical Terms: Prairie dogs. Dewey Class. No.: 599.32